This part is a kind of semiconductor called F9223L-F219.

Function of this product has M-Power.

Manufacturers : Fuji

Image and pinout :

Some of the text within the PDF file :

No t o c e r e m m f d n o e n r e d w n sig . No t o c e r e m m f d n o e n r e d w n sig . 1.Application This specifies M-Power:F9223L-F219 applied to multi-oscillated current resonant type power supply. 2.Block diagram Q2 ○ D G ○ S ○ 23 D2 ⑳G2 ○ D G OUT○ ○ ISNS○ GNDP○ GND○ S○ ④S1 ⑧GND Q1 ⑲D1,S2 VCC⑦ VREF⑩ COMP⑪ CS⑫ CB⑬ CON⑭ STB⑮ VW⑯ IC This material and the information herein is the property of Fuji Electric Device Technology Co.,Ltd. They shall be neither reproduced, copied,lent, or disclosed in any way whatsoever for the use of any third party nor used for the manufacturing purposes without the express written consent of Fuji Electric Device Technology Co.,Ltd. ○VCCP ○VCC ○VREF ○COMP ○CS ○CB ○CON ○ST [ ... ]

F9223L-F219 PDF Datasheet Download